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Old 08-25-2012, 01:29 PM   #1
lestx
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Battery disconnect switch

Question,does the switch need to be on when hook-up to 50 amp power and be charging the batteries ? We have a 09,3400RL 10th Anniversary,2ea a/c , 2ea batteries and a 80 amp converter. Will the batteries help smooth out the power going to the electronics boards? I do want to over charge the batteries and keep up with adding distilled water.
Thanks for you input.
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Old 08-25-2012, 02:07 PM   #2
Carl n Susan
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Yes the switch has to be "On" to charge the batteries (and run the propane detector among other things).

With the newer rigs, Montana is using a intelligent converter with multi-stage technology. This means it won't cook your batteries as older converters would do. So leave the disconnect switch on all the time. It won't hurt anything. The newest Montana's use a Intelli-Power converter. I suspect your 2009 has Xantrac multi-stage converter. You might check the specs or hunt it down. The smart chargers all function pretty much the same. Here is a description of the various stages from the Intelli-Power manual.

================================================== =========

Inteli-Power 4500 Series models can recharge the battery to 90% in 2-3 hours using our patented Charge Wizard technology.

The built-in Charge Wizard automatically selects one of three operating modes: BOOST, NORMAL, STORAGE.

BOOST Mode - Indicated by green LED remaining on. The output voltage is 14.4VDC to rapidly recharge the battery up to 90% of full charge.

NORMAL Mode - When the battery is between 50% and 90% charged, the green LED will flash once per second. When the battery has reached 90% of full charge the green LED will flash 2 - 3 times per second. In this mode the output voltage is 13.6VDC and the converter is safely completing the charge of the battery.

STORAGE Mode - Indicated by green LED flashing every 6 - 8 seconds. In this mode the output voltage has ben lowered to 13.2VDC, the RV battery is fully charged and the converter is maintaining the charge.

http://www.progressivedyn.com/all_in_one_pd4500_1.html

On Edit: Corrected spelling of Xantrac
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Old 08-25-2012, 04:18 PM   #3
DQDick
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Just turn it on and leave it on. It's main use is if you winterize and/or store it without power.
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Old 08-26-2012, 03:47 AM   #4
RickW
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My 2009 did not have the multistage charger. That is one of the reasons I added the Magnum Inverter/Charger in stead of just adding a inverter. Now my 2009 was a early build in the model year so they may have changed later in the year.
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Old 08-26-2012, 06:52 AM   #5
Carl n Susan
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Rick: According to Montana's spec sheets (http://www.keystonerv.com/media2/doc.../Montana08.pdf) and the couple of 2008/2009 rigs I have worked on, you should have had a 80 amp Xantrex XADC Converter Charger. This converter is a three stage intelligent charger. It is no longer available, but here is the spec sheet for it.

http://www.bestconverter.com/assets/...c/XADCdata.pdf

What converter did you have?
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Old 08-27-2012, 05:58 AM   #6
RickW
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I don't recall. Adding the Magnum Inverter/Charger was one of the very first things I did to the trailer.
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Old 08-28-2012, 03:33 PM   #7
lestx
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Thanks All for your input, I will leave my battery switch on.
Thanks,
Les
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